Natures wonders: kangaroos are lefft handed (Introduction)

by David Turell @, Friday, June 19, 2015, 15:31 (1556 days ago) @ David Turell

Generally true, and raises the question of why are primates mostly right handed. Handedness must have some origin in evolution, but as a southpaw I can tell you that the inheritance of handedness, if any, in humans is unknown and seemingly not present.

http://www.sciencedaily.com/releases/2015/06/150618134235.htm

"Kangaroos prefer to use one of their hands over the other for everyday tasks in much the same way that humans do, with one notable difference: generally speaking, kangaroos are lefties. The finding, reported in the Cell Press journal Current Biology on June 18--the first to consider handedness in wild kangaroos--challenges the notion that "true" handedness among mammals is a feature unique to primates.

"'According to a special-assessment scale of handedness adopted for primates, kangaroos pulled down the highest grades," says Yegor Malashichev of Saint Petersburg State University in Russia. "We observed a remarkable consistency in responses across bipedal species in that they all prefer to use the left, not the right, hand.'"


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